JP6132835B2 - Disposable wearing article manufacturing method and manufacturing apparatus - Google Patents

Description

  The present invention relates to a manufacturing method and a manufacturing apparatus for disposable wearing articles.

  As a method for manufacturing this type of wearing article, a method is known in which a pair of panels are joined to the left and right in the waistline direction of the diaper body (Patent Document 1).

JP2010-530269A (FIGS. 1 to 6)

  However, in the invention of Patent Document 1, the pair of panels are positioned at the same position in the vertical direction of the main body of the diaper by controlling the conveyance speed of the pair of panels together with the rotation speed of the alignment roller. Such speed control generally inevitably complicates the mechanism for speed control.

  Accordingly, one object of the present invention is to provide a method and apparatus for manufacturing a disposable worn article in which the mechanism for arranging the panels at the same vertical position of the main body is less complicated.

In one aspect, the manufacturing method of the present invention is a method for manufacturing a disposable wearing article in which a set of panels are joined to each other at the same position in the longitudinal direction of the main body and on both the left and right sides in the waistline direction. ,
A cutting step in which a plurality of panels are generated one after another by cutting one after another along a virtual cutting line extending in the width direction perpendicular to the flow direction at the front end of the flow direction of the continuous web continuous in the flow direction;
A widening step of widening a gap in the width direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels;
A first axis of a first roller that receives and holds one panel of the set of panels spaced apart from each other in the width direction, and a second axis that receives and holds the other panel of the set of panels. A receiving step of receiving each of the panels at first and second receiving positions spaced apart from each other in the flow direction by the first and second rollers, the second axis of the roller being offset from each other in the flow direction of the panel When,
A disposing step of disposing the panels from the first and second rollers on the both sides at the same position in the longitudinal direction of the main body at the first and second transfer positions separated from each other in the flow direction. .
Note that “extending in the width direction orthogonal to the flow direction” means including not only extending in the width direction but also extending in both the width direction and the flow direction.

On the other hand, in one aspect, the manufacturing apparatus of the present invention is a manufacturing apparatus for disposable wearing articles in which a pair of panels are joined to each other at the same position in the longitudinal direction of the main body and on both the left and right sides in the waistline direction. There,
A cutter that sequentially cuts the leading end portion of the continuous web in the flow direction along a virtual cutting line extending in the width direction orthogonal to the flow direction to generate a plurality of panels one after another;
A widening drum that widens the gap in the width direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels;
A first axis of a first roller that receives and holds one panel of the set of panels spaced apart from each other in the width direction, and a second axis that receives and holds the other panel of the set of panels. The second axis of the roller is arranged to be offset from each other in the flow direction of the panel, and the first and second rollers receive the panels at first and second receiving positions spaced from each other along the flow direction. Furthermore, the phase wheel which arrange | positions each said panel from the said 1st and 2nd roller in the said both sides in the mutually same position of the said longitudinal direction in the 1st and 2nd transfer position mutually spaced apart in the said flow direction. With.

In these cases, the first axis of the first roller and the second axis of the second roller are offset from each other by a predetermined offset amount Δ. Therefore, among the rollers, the first roller offset to the downstream side. Receives the panel from the widening drum at a position that is substantially equal to the offset amount Δ from the second roller.

Further, when each of the rollers rotates about 180 °, the panel is disposed in the main body. However, the first roller offset to the downstream side causes the panel to be positioned upstream in the flow direction of the main body by the offset amount Δ. On the contrary, the second roller arranges the panel in the main body part downstream in the flow direction of the main body part by the offset amount Δ. Therefore, also here, the panel arranged by the first roller is delayed by approximately equal to the offset amount Δ compared to that of the second roller.

Therefore, if the interval P1 between the panels arranged on the left and right of one main body and the value twice the offset amount Δ are substantially equal to each other, that is, P1≈2 * Δ, complicated speed control is not performed. However, they can be arranged at the same position in the longitudinal direction of the main body.

In the prior art, a pair of trapezoidal panels are transferred on the drum in the width direction of the drum. For this reason, the trapezoidal panel and the panel interfere with each other, and the holding position of the panel is displaced, or the panel is wrinkled.

  Accordingly, another object of the present invention is to provide a manufacturing method and a manufacturing apparatus for a disposable wearing article in which the holding position of the panel is shifted or wrinkles are not easily generated on the panel.

The manufacturing method of the present invention, in another aspect, is a method for manufacturing a disposable wearing article in which a set of panels is joined to both the left and right sides of the body portion in the waistline direction.
A cutting step in which a plurality of panels are generated one after another by cutting one after another along a virtual cutting line extending in the width direction perpendicular to the flow direction at the front end of the flow direction of the continuous web continuous in the flow direction;
A first re-pitch step of widening an interval in the flow direction between the plurality of panels;
After the first re-pitch step, a widening step of widening the interval in the width direction between a pair of adjacent panels among the plurality of panels;
And a disposing step of disposing each of the set of panels on both sides of the main body after the widening step.

On the other hand, the manufacturing apparatus of the present invention, in another aspect, is a manufacturing apparatus for a disposable wearing article in which a pair of panels are joined to both the left and right sides of the body portion in the waistline direction.
A cutter that sequentially cuts the leading end portion of the continuous web in the flow direction along a virtual cutting line extending in the width direction orthogonal to the flow direction to generate a plurality of panels one after another;
A first re-pitch drum that widens the interval between the plurality of panels in the flow direction;
A widening drum that is arranged downstream of the first re-pitch drum, and widens the interval in the width direction between a pair of adjacent panels among the plurality of panels;
A phase wheel that is disposed downstream of the widening drum and that disposes each of the pair of panels on both sides of the main body.

In these cases, before the panel cut from the continuous web is moved in the width direction, the panel is moved in the flow direction by the first re-pitch step, and the interval between adjacent panels is expanded. Therefore, there is no possibility that the panels interfere with each other when the panels are moved in the width direction to widen the interval between the panels. Therefore, there is no possibility that the holding position of the panel is shifted or wrinkles due to interference between the panels.

Note that “extending in the width direction” may be set such that a virtual cutting line is set along a side perpendicular to the flow direction, or may be set in an oblique direction inclined with respect to the width direction. Furthermore, it means that a quadratic curve or a cubic curve may be used instead of a straight line.
For example, even if a virtual cutting line is set along the side, the interval in the flow direction between the panels is expanded in advance by the first re-pitch process, so that the panels are expanded during the widening process. Are not likely to interfere with each other due to wind pressure or the like.

FIG. 1 is a conceptual diagram showing a part of the process of Example 1 of the method for manufacturing a worn article according to the present invention. FIG. 2 is a conceptual diagram showing the remainder of the process. FIG. 3A is a schematic side view showing the manufacturing apparatus of the present invention, and FIG. 3B is a plan view in which a panel is arranged on the main body. FIG. 4A is a schematic plan view showing the phase wheel, and FIGS. 4B and 4C are schematic side views showing the second and first rollers, respectively. FIG. 5 is a schematic perspective view showing the second re-pitch drum and the phase wheel. 6A and 6B are schematic perspective views showing a receiving process in which the first and second rollers receive the panel. 7A and 7B are schematic perspective views showing an arrangement process in which the first and second rollers arrange the panel on the main body. FIG. 8 is a conceptual diagram showing a part of the process of the second embodiment. FIG. 9 is a side view showing the principle of the present invention.

  Preferably, the manufacturing method according to the one aspect further includes a re-pitch step of expanding a space in the flow direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels.

  In this case, a panel can be continuously arrange | positioned with respect to an adjacent main-body part.

Preferably, the rotation speeds of the plurality of pads holding the panel between the receiving step and the arranging step are periodically changed by the number of the pads per rotation in accordance with the size of the wearing article. Further comprising a shifting step.

  In this case, a plurality of types of wearing articles can be manufactured with a single manufacturing apparatus by electrical control using a servo motor.

  Preferably, in the manufacturing apparatus according to the one aspect, each of the first and second rollers includes a plurality of first and second pads that hold the panel, and the first pad and the second pad Are spaced apart from each other in the width direction, and the first axis that is the rotation center of the first pad and the second axis that is the rotation center of the second pad are separated from each other in the flow direction. Yes.

  More preferably, the rotation radii of the first pad and the second pad are the same.

  In this way, when the rotation radii are the same, it is convenient, but the rotation radii of the first and second rollers need not be equal to each other.

  More preferably, it further includes a re-pitch drum that is arranged between the cutter and the widening drum and widens the interval in the flow direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels. .

  A panel can be continuously arrange | positioned in a several main-body part by expanding the space | interval of a pair of panels by a re-pitch drum.

Preferably, the rotation speed of the plurality of pads holding the panel is periodically changed by the number of the pads per rotation in accordance with the size of the wearing article between the receiving and the arrangement of the rollers. A shift control device is further provided.
In this case, a plurality of types of wearing articles can be manufactured with a single manufacturing apparatus by electrical control using a servo motor.

Preferably, in the manufacturing method according to another aspect, the virtual cutting line is non-parallel to the width direction, and the leading end portions of the continuous web are successively arranged along the non-parallel cutting line in the cutting step. Cut to produce the panel.
“Non-parallel” is a concept that excludes the case where a virtual cutting line is set along a horizontal direction perpendicular to the flow direction. That is, it means that the virtual cutting line may be set in an oblique direction inclined with respect to the width direction, and may be a quadratic curve or a cubic curve instead of a straight line.

  In this case, by performing the first re-pitch step, interference between the panels can be prevented when the interval in the width direction between the panels adjacent to each other in the flow direction is increased.

  More preferably, in the first re-pitch step, a second re-pitch step of expanding a set interval between the set of panels spaced apart from each other in the flow direction and another set of panels adjacent to the set of panels is further performed. Prepare.

  By the second re-pitch step, the set interval between one set of panels and the adjacent set of panels can be matched with or close to the interval between adjacent main body portions. That is, in the arrangement step, a set of panels can be arranged on each main body portion so as to match (or approach) the interval between adjacent main body portions conveyed in the flow direction.

More preferably, after the second re-pitch step, a receiving step of receiving a plurality of sets of panels with the extended set interval one after another from an upstream device to a downstream device;
After the receiving step, a third re-pitch step for further expanding the set interval is further provided.

  By performing the third re-pitch step in an apparatus different from the second re-pitch step, it is possible to prevent the diameter of the drum responsible for the second re-pitch step from becoming too large.

Preferably, in the manufacturing apparatus according to another aspect, the virtual cutting line is non-parallel to the width direction, and the leading end portion of the continuous web is successively cut by the cutter along the non-parallel cutting line. The panel is generated.

In this case, when the interval between the panels in the width direction is increased by the widening drum by expanding the interval in the flow direction of the plurality of panels by the first re-pitch drum, along the non-parallel cutting line. Panels are prevented from interfering with each other.

More preferably, the set interval between a pair of panels arranged downstream of the first re-pitch drum and spaced apart from each other in the flow direction and another set of panels adjacent to the set of panels is expanded. A second re-pitch drum is further provided.

In this case, the second re-pitch drum can widen the set interval between one set of panels and the next set of panels.

More preferably, the phase wheel is disposed downstream of the second re-pitch drum, and receives a plurality of sets of panels with the increased set interval one after another, and further increases the set interval after the reception.

By further widening the group interval by the phase wheel, it is possible to prevent the diameter of the second re-pitch drum from becoming too large.

The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

Embodiments of the present invention will be described below with reference to the drawings.
First, prior to the description of the manufacturing method and apparatus, an example of a wearing article that can be manufactured by the manufacturing method will be described.

As shown in FIG. 2, the diaper includes an absorbent main body 20, a pair of side panels PL and PR joined to the main body 20, and a pair of ear members 21 and 21.
The said main-body part 20 covers a wearer's front waist area, a crotch area, and a back waist area at the time of wear. The main body portion 20 includes a front body portion 20f, a crotch portion 20c, and a rear body portion 20b corresponding to the respective regions.

The panels PL and PR are respectively positioned between the front and rear trunk portions 20f and 20b when worn. Panels PL and PR are respectively joined to the left side and the right side of the end in the longitudinal direction Y of main body 20. The panels PL and PR are joined to the rear trunk 20b in a state of protruding from the left and right of the rear trunk 20b of the main body 20, for example. Panels PL and PR may be joined to front body portion 20f.

On the other hand, the ear member 21 is joined to the left and right of the front body portion 20 f of the main body portion 20. The ear member 21 may be omitted.

Panels PL and PR may be formed, for example, by sandwiching an elastic yarn (an example of an elastic member) between two nonwoven fabrics. As shown in FIG. 2, the panels PL and PR may be in a contracted state in which a gather is formed by contracting the elastic yarn in the waistline direction X in an unloaded state.
The method disclosed in JP63-243309A may be used as a method of arranging elastic yarns on the panels PL and PR.
The panels PL and PR may be formed of a stretchable nonwoven fabric having stretchability that does not have the elastic yarn.

A first surface fastener (an example of a joining element) F1 may be joined to the inner surface side (the side that comes into contact with the skin when worn) of the panels PL and PR. On the other hand, a second surface fastener (not shown) that can be surface-bonded to the first surface fastener F1 on the outer surface side (the side exposed to the outside when worn) of the main body portion 20 on the front body portion 20f side. ) May be joined. When wearing, the side panel PL, PR is wound around the wearer's torso while grasping the ear member 21, and the first surface fastener F1 of the side panel PL, PR is joined to the second surface fastener so that the diaper is It is worn by the wearer.

In addition, the said 2nd surface fastener can be abbreviate | omitted by forming the outer surface side of the said main-body part 20 with the raw material which 1st surface fastener F1 can join. The main body 20 and the panels (PR, PL) may be provided with an adhesive tape and a portion bonded to the adhesive tape, instead of the hook-and-loop fastener.

The main body 20 has, for example, a pair of cuffs (leak barriers) that contact the surface of the wearer, a liquid-permeable top sheet, an absorbent core 24 that absorbs liquid, and liquid impermeability. A back sheet or the like may be provided.

In addition, the main-body part 20 may be provided with the leg elastic yarn, for example. Furthermore, the cuff may be omitted, or may be provided with an elastic yarn that contracts the cuff in the Y direction. Further, the back sheet may be a sheet having air permeability and waterproofness. The back sheet may be a stretchable sheet.

Next, an example of a manufacturing apparatus will be described.
As shown in FIG. 3A, the manufacturing apparatus includes a cutter 1, an anvil roll 2, a first re-pitch drum 3, a widening drum (second re-pitch drum) 4, a phase wheel 5, and a conveying device 6.

As shown in FIG. 1, the cutter 1 moves the leading end in the flow direction Y of the continuous web W introduced onto the anvil roll 2 from the supply device 11 of the continuous web W continuous in the flow direction Y in the flow direction Y. A plurality of panels PL and PR are sequentially generated by cutting one after another at a predetermined interval along a virtual cutting line C extending in the orthogonal width direction X. For example, as shown in FIG. 1, the continuous web W is cut | disconnected one after another along the cutting line C from which inclination differs alternately, and the panels PL and PR are produced | generated one after another.

The virtual cutting line C is non-parallel to the width direction X, and the front end portions of the continuous web W are successively cut by the cutter 1 along the non-parallel cutting line C, and the panels PL, A PR may be generated. For example, the panels PL and PR may have a trapezoidal shape, and the panels PL and PR may have a point-symmetric shape with respect to the point O on the center line CL. Further, the shapes of the panels PR and PL may be parallelograms, squares or rectangles.

In FIG. 3A, the first re-pitch drum 3 has a plurality of left and right pads 3L and 3R that approach each other after the interval is widened during one rotation. After the first re-pitch drum 3 receives the panels PL and PR by the pads 3L and 3R, the interval P0 in the flow direction Y of the plurality of panels PL and PR in FIG. 1 is expanded to the interval P1. The left and right pads 3L and 3R (FIG. 3A) may have a trapezoidal shape that approximates the shape of the panels PL and PR.
The first re-pitch drum 3 may be a drum disclosed in US2006 / 0151093 A1 or JP63-317576A, and all of the description is incorporated here.

The widening drum 4 in FIG. 3A is arranged downstream of the first re-pitch drum 3, and sets the interval in the width direction X between a pair of the panels PL, PR adjacent to each other among the plurality of panels PL, PR. spread. The widening drum 4 widens a set interval P2 between a set of panels PL and PR spaced apart from each other in the flow direction Y and another set of panels PL and PR adjacent to the set of panels PL and PR. A second re-pitch drum may be configured.

The widening drum 4 shown in FIG. 5 has a plurality of left and right pads 4L and 4R. The pads 4L and 4R return to the original state after the interval between the width direction X and the flow direction Y is widened while the widening drum 4 is rotated once.
That is, while the widening drum 4 rotates in the circumferential direction R, the right pad 4R moves to one side of the widening drum 4, and the left pad 4L moves to the other side of the widening drum 4 so that the pads 4R and 4L. And the width direction X of the pads 4R, 4R (4L, 4L) adjacent to each other in the flow direction Y are widened by the widening drum 4 constituting the second re-pitch drum. (Second re-pitch step). In the second re-pitch step, as shown in FIG. 1, the interval between the panels PL and PL (PR, PR) adjacent in the flow direction is expanded from (2 * P1) to P2.
After the panels PR and PL are transferred to the first and second rollers 51 and 52, respectively, in the arrangement step described later, the width interval between the right and left pads 4R and 4L is set to receive the panels PR and PL again. The original state is restored, and the distance in the flow direction between the re-pitched pads is also restored.
As the structure of the widening drum 4, for example, the structure of a drum disclosed in JP2006-230438 A may be adopted, and all of the description is incorporated here.

The phase wheel 5 of FIG. 3A includes first and second rollers 51 and 52 disposed downstream of the widening drum 4, and each of the pair of panels PR and PL is disposed on the main body 20.
A first axis 51S of the first roller 51 that receives and holds one of the panels PR, PR, which are spaced apart from each other in the width direction X in FIG. 5, and the set of panels PL, PR. The second axis 52S of the second roller 52 that receives and holds the other panel PL is offset (eccentric) by Δ in the flow direction Y of the panels PL and PR.

4A to 4C, the first and second rollers 51 and 52 have a plurality of first and second pads 51P and 52P that hold the panels PL and PR, respectively. The first pad 51P and the second pad 52P are spaced apart from each other in the width direction X, and the first axis 51S that is the rotation center of the first pad 51P and the rotation center of the second pad 52P. Are spaced apart from each other along the flow direction Y.
In addition, since there is a phase difference between the right panel PR and the left panel PL, the first pad 51P and the second pad 52P that receive these panels respectively downstream are displaced from each other in the circumferential position.

The first and second rollers 51 and 52 receive the panels PL and PR at first and second receiving positions P11 and P12 that are spaced apart from each other along the flow direction Y. Furthermore, the first and second rollers 51 , 52 are arranged on both sides of the main body 20 as shown in FIGS. 7A and 7B at the first and second transfer positions P21 and P22 in FIG. To do. The pair of panels PL and PR are arranged at the same position (level) in the flow direction Y of the main body 20. That is, they are arranged so as to be symmetrical positions.

In addition, the said conveying apparatus 6 conveys the main-body part 20 along a horizontal surface, for example.

Next, an example of the manufacturing method will be described.
The manufacturing method of the present embodiment includes a cutting process, a first re-pitch process, a widening process, a second re-pitch process, a receiving process and an arrangement process described below.

As shown in FIG. 1 and FIG. 3A, in the cutting step, a virtual cutting in which the leading end of the continuous web W continuous in the flow direction Y on the anvil roll 2 extends in the width direction X by the cutter 1. A plurality of panels PL and PR are generated one after another by being cut one after another at a predetermined interval along the line C. After the plurality of panels PL and PR generated by the cutting are received by the pads 3L and 3R of the first re-pitch drum 3 in FIG. 3A, the interval in the flow direction Y in FIG. 1 is P0 to P1 in FIG. The first re-pitch step that is expanded to the above is executed.

Thereafter, the panels PL and PR in FIG. 1 are transferred from the first re-pitch drum 3 in FIG. 3A to the widening drum 4 after the first re-pitch step. On the widening drum 4, a widening step is performed in which a space in the width direction X between a pair of adjacent panels PL, PR among the plurality of panels PL, PR in FIG. 1 is widened.

Simultaneously with the widening step, a second re-pitch that widens a set interval between a set of panels PL and PR spaced apart from each other in the flow direction Y and another set of panels PL and PR adjacent to the set of panels. The process is executed. That is, the interval between the panels PR (PL) adjacent in the flow direction Y is expanded to P2.
At this time, the pair of panels PL and PR have a phase shift (phase difference) of the pitch P1 in FIG.

After the widening step and the second re-pitch step, a receiving step is performed in which the first and second rollers 51 and 52 of the phase wheel 5 receive the panels PR and PL from the widening drum 4 of FIG. The step of disposing each of the panels PR, PL on the main body 20 is executed.

That is, first, the panel PR held on the right pad 4R of the widening drum 4 in FIG. 5 is received as shown by applying the halftone dots in FIG. 6A to the first pad 51P of the first roller 51. Thereafter, the panel PL held on the left pad 4L of the widening drum 4 of FIG. 5 is received as shown by applying the halftone dots of FIG. 6B to the second pad 52P of the second roller 52. The first and second pads 51P and 52P are provided corresponding to the panels PR and PL, but the pads are not shown in FIGS. 6 and 7 for the sake of drawing.

The phase difference P1 present in the pair of panels PL and PR at the time of reception is such that the second reception position P12 is positioned upstream of the flow direction Y by the offset amount Δ compared to the first reception position P11. Therefore, it is approximately (P1-Δ). That is, the phase difference between the pair of panels PL and PR becomes small.

After the receiving step, the arranging step shown in FIGS. 7A and 7B is performed. That is, in this arrangement step, the panels PR and PL are separated from each other in the flow direction Y from the first and second rollers 51 and 52 at the first and second transfer positions P21 and P22 (FIG. 3A). Arranged on both sides of the main body 20.
As shown in FIG. 7A, after the right panel PR is disposed from the first roller 51 on one side of the main body 20 at the first transfer position P21, as shown in FIG. The left panel PL from the two rollers 52 is disposed on the other side of the main body 20 at the second transfer position P22.

Here, as shown in FIG. 3A, the second transfer position P22 exists downstream of the first transfer position P21 by the offset amount Δ. Therefore, the phase difference between the pair of panels PL and PR is approximately (P1−Δ) to approximately (P1−2 * Δ), and is set to P1≈2 * Δ. The PR phase difference is approximately zero. That is, the pair of panels PL and PR are disposed on both sides of the main body 20 at substantially the same position in the longitudinal direction Y of the main body 20.
Here, the principle of the present invention will be described in more detail with reference to FIG.
As clearly shown in FIG. 9, the offset amount C · Δ between the first receiving position P11 and the second receiving position P12 will be smaller than the offset amount Δ between the first passing position P21 and the second passing position P22. Therefore, it will not be exactly (P1 = 2 * Δ). The difference between the offset amount C · Δ and the offset amount Δ is adjusted to an appropriate value on site.

Next, another embodiment will be described.
In the present embodiment, a plurality of types of main body portions 20 can be manufactured by a single manufacturing apparatus without changing parts.

The length of the main body 20 is different for each size of the main body 20. Therefore, it is necessary to change the interval (pitch) P2 between the pair of adjacent panels PL and PR to P3. In order to change the interval, a shift control device (not shown) is provided in this embodiment.
The speed change control device controls, for example, a servo motor, and the rotational speeds of the plurality of pads 51P and 52P that hold the panels PL and PR between the reception and arrangement of the rollers 51 and 52 are the size of the worn article. Accordingly, the number of the pads 51P and 52P is periodically changed per rotation. For example, when the size of the main body 20 is longer than the standard, the phase wheel 5 is disposed downstream of the widening drum 4 and receives a plurality of sets of panels PL and PR with a wide set interval one after another. The set interval is further expanded from P2 to P3.
Such a periodic shifting method uses a main motor and an auxiliary servo motor, and is disclosed in, for example, JP2002-35027A, the entire description of which is incorporated herein.

  Next, the manufacturing method of this embodiment will be described. The present embodiment includes a third re-pitch step. In the third re-pitch step, a plurality of sets of panels PL and PR having the set intervals expanded after the second re-pitch step are successively transferred from the widening drum 4 to the phase wheel 5. After the receiving process of receiving, the set interval is further expanded from P2 to P3. That is, the first and second rollers 51 and 52 are rotated once by the rotation speed of the plurality of pads 51P and 52P holding the panels PL and PR between the receiving process and the arranging process in accordance with the size of the wearing article. Further, there is further provided a speed change process in which the speed is periodically changed by the number of the pads 51P and 52P (three times in the case of FIG. 4).

  In the manufacturing apparatus of FIG. 3A, the first pad 51 and the second pad 52 may have the same rotational radius, but the rotational radii may be different from each other. In this case, the conveying surface of the conveying device 6 will be inclined with respect to the horizontal.

  Further, the rollers and drums 1 to 5 in FIG. 3A may be arranged horizontally instead of vertically to reduce the load that is accumulated on the shaft, and in this case, the conveyance surface of the conveyance device 6 is set to be vertical. May be.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.
For example, the phase wheel 5 may not be provided.
Moreover, a wearing article may be a diaper type or a pants type.
Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the claims.

INDUSTRIAL APPLICATION This invention can be utilized for manufacture of the manufacturing method and manufacturing apparatus of a disposable wearing article.

1: Cutter 11: Supply device 2: Anvil roll 20: Absorbent main body 20b: Rear trunk 20c: Crotch 20f: Front trunk 2
21: Ear member 3: First re-pitch drum 3L, 3R: Left and right pad 4: Widening drum (second re-pitch drum) 4L, 4R: Left and right pad 5: Phase wheel 51, 52: First And second roller 51S: first axis 52S: second axis 51P, 52P: first and second pads 6: conveying device C: cutting line CL: center line F1: first surface fastener O: point PL, PR: side Panels P1, P1: Interval P2: Assembly interval P11, P12: First and second receiving positions P21, P22: First and second transfer positions X: Width direction Y: Flow direction W: Continuous web

Claims (14)

A method of manufacturing a disposable wearing article in which a pair of panels are joined to each other at the same position in the longitudinal direction of the main body and on both the left and right sides in the waistline direction,
A cutting step in which a plurality of panels are generated one after another by cutting one after another along a virtual cutting line extending in the width direction perpendicular to the flow direction at the front end of the flow direction of the continuous web continuous in the flow direction;
A widening step of widening a gap in the width direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels;
A first axis of a first roller that receives and holds one panel of the set of panels spaced apart from each other in the width direction, and a second axis that receives and holds the other panel of the set of panels. The second axis of the roller is offset from each other along the flow direction of the panel, and the first and second rollers receive the panels at first and second receiving positions spaced apart from each other in the flow direction. Receiving process;
An arrangement step of arranging the panels from the first and second rollers on the both sides at the same position in the longitudinal direction of the main body at first and second transfer positions spaced apart from each other along the flow direction; A manufacturing method comprising: 2. The manufacturing method according to claim 1, further comprising a re-pitch step of widening a space in the flow direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels . 2. The roller according to claim 1, wherein the rotation speeds of the plurality of pads holding the panel between the receiving step and the arranging step are periodically equal to the number of the pads per rotation in accordance with the size of the wearing article. A manufacturing method , further comprising a speed change step . A set of panels is a manufacturing apparatus for a disposable wearing article in which the panels are joined to each other at the same position in the longitudinal direction of the main body and on both the left and right sides in the waistline direction,
A cutter that sequentially cuts the leading end portion of the continuous web in the flow direction along a virtual cutting line extending in the width direction orthogonal to the flow direction to generate a plurality of panels one after another;
A widening drum that widens the gap in the width direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels;
A first axis of a first roller that receives and holds one panel of the set of panels spaced apart from each other in the width direction, and a second axis that receives and holds the other panel of the set of panels. The second axis of the roller is arranged to be offset from each other in the flow direction of the panel, and the first and second rollers receive the panels at first and second receiving positions spaced from each other along the flow direction. Furthermore, the phase wheel which arrange | positions each said panel from the said 1st and 2nd roller in the said both sides in the mutually same position of the said longitudinal direction in the 1st and 2nd transfer position mutually spaced apart in the said flow direction. A manufacturing apparatus comprising: 5. The manufacturing apparatus according to claim 4, wherein the first roller has a plurality of first pads that rotate around the first axis while holding the panel.
The second roller has a plurality of second pads that rotate around the second axis while holding the panel,
The plurality of first pads and the plurality of second pads are spaced apart from each other in the width direction,
The manufacturing apparatus, wherein the first axis and the second axis are separated from each other in the flow direction . 6. The manufacturing apparatus according to claim 5, wherein the rotation radii of the first pad and the second pad are the same . The apparatus according to claim 6, wherein the re-pitch drum is disposed between the cutter and the widening drum, and widens a space in the flow direction between a pair of panels adjacent to each other in the flow direction among the plurality of panels. A manufacturing apparatus further comprising: 7. The manufacturing apparatus according to claim 6, wherein each of the rollers is rotated by a number corresponding to the number of the pads per one rotation in accordance with the size of the wearing article so that the rotation speeds of the plurality of pads holding the panel during the period from the reception to the arrangement. The manufacturing apparatus further includes a shift control device that is shifted in a speed . A method for producing a disposable wearing article in which a set of panels is bonded to both the left and right sides of the body portion in the waistline direction,
A cutting step in which a plurality of panels are generated one after another by cutting one after another along a virtual cutting line extending in the width direction perpendicular to the flow direction at the front end of the flow direction of the continuous web continuous in the flow direction;
A first re-pitch step of widening an interval in the flow direction between the plurality of panels;
After the first re-pitch step, a widening step of widening the interval in the width direction between a pair of adjacent panels among the plurality of panels;
An arrangement step of arranging each of the pair of panels on both sides of the main body after the widening step ;
The manufacturing method further comprising a second re-pitch step of widening a set interval between the set of panels spaced apart from each other in the flow direction in the first re-pitch step and another set of panels adjacent to the set of panels. . The method of claim 9, wherein
Wherein a non-parallel imaginary cutting line with respect to the width direction, wherein the tip portion of the continuous web along said non-parallel cutting line in the cutting step is one after another cut in the panel is created, produced Method. The method of claim 9 , wherein
A receiving step of receiving a plurality of sets of panels with the extended set interval after the second re-pitch step one after another from an upstream device to a downstream device;
The manufacturing method further comprising a third re-pitch step for further expanding the set interval after the receiving step . A device for manufacturing a disposable wearing article in which a pair of panels are joined to both the left and right sides of the body portion in the waistline direction,
A cutter that sequentially cuts the leading end portion of the continuous web in the flow direction along a virtual cutting line extending in the width direction orthogonal to the flow direction to generate a plurality of panels one after another;
A first re-pitch drum that widens the interval between the plurality of panels in the flow direction;
A widening drum that is arranged downstream of the first re-pitch drum, and widens the interval in the width direction between a pair of adjacent panels among the plurality of panels;
A phase wheel disposed downstream of the widening drum and disposing each of the pair of panels on both sides of the main body ,
A second re-pitch that widens a set interval between a set of panels arranged downstream of the first re-pitch drum and spaced apart from each other in the flow direction, and another set of panels adjacent to the set of panels. A manufacturing apparatus further comprising a drum. The manufacturing apparatus of claim 12 ,
Wherein a non-parallel imaginary cutting line with respect to the width direction, wherein the tip portion of the continuous web along a non-parallel cut lines one after another cut in the panel by the cutter is produced, the manufacturing apparatus . The manufacturing apparatus of claim 12 ,
The manufacturing apparatus, wherein the phase wheel is arranged downstream of the second re-pitch drum, and receives a plurality of sets of panels with the increased set interval one after another, and further increases the set interval after the reception .

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